From f899e05fe89179d8de06f7c7a3bc5dbe3485a166 Mon Sep 17 00:00:00 2001
From: CoryMartin-NOAA <cory.r.martin@noaa.gov>
Date: Wed, 9 Aug 2023 12:35:35 +0000
Subject: [PATCH] make hera compiler happy

---
 utils/ioda_example/gdas_meanioda.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/utils/ioda_example/gdas_meanioda.h b/utils/ioda_example/gdas_meanioda.h
index 11aad1321..95742c196 100644
--- a/utils/ioda_example/gdas_meanioda.h
+++ b/utils/ioda_example/gdas_meanioda.h
@@ -1,4 +1,5 @@
 #include <iostream>
+#include <numeric>
 #include "eckit/config/LocalConfiguration.h"
 #include "ioda/Group.h"
 #include "ioda/ObsSpace.h"
@@ -66,7 +67,7 @@ namespace gdasapp {
       }
 
       // the below line computes the mean, aka sum divided by count
-      const float mean = std::reduce(buffer.begin(), buffer.end()) / float(nlocs);
+      const float mean = std::accumulate(buffer.begin(), buffer.end(), 0) / float(nlocs);
 
       // write the mean out to the stdout
       oops::Log::info() << "mean value for " << group << "/" << variable << "=" << mean << std::endl;